package com.project.common.utils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import org.apache.commons.lang3.time.DateFormatUtils;

/**
 * 时间工具类
 *
 * @author
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    private final static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");


    /**
     * 按传输时间返回时间的下一天
     *
     * @param date 传输时间
     * @param day  天数左右移动，0-返回当前天
     * @return 下一天
     */
    public static String getNextDay(Date date, int day) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.roll(Calendar.DAY_OF_YEAR, day);
        return sdf.format(calendar.getTime());
    }

    /**
     * 按传输时间返回时间的下一月
     *
     * @param date  传输时间
     * @param month 月数左右移动，0-返回当前月
     * @return 下一月
     */
    public static String getNextMonth(Date date, int month) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.roll(Calendar.MONTH, month);
        return sdf.format(calendar.getTime());
    }


    /**
     * 按传输判断是否工作日
     *
     * @param date 传输时间
     * @return 是否工作日
     */
    public static boolean isWorkDate(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        int day = calendar.get(Calendar.DAY_OF_WEEK);
        if (!(day == Calendar.SUNDAY || day == Calendar.SATURDAY)) {
            return false;
        }
        return true;
    }

    /**
     * 按传输时间返回下一周的这一天
     *
     * @param month 周数左右移动，0-返回当前周
     * @return 下一周
     */
    public static String getNextWeek(Date date, int week) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.roll(Calendar.WEEK_OF_YEAR, week);
        return sdf.format(calendar.getTime());
    }

    /**
     * 按传输时间返每周工作日，过去工作日不返回
     *
     * @return 工作日
     * @throws Exception
     */
    public static List<String> getWorkDay(Date date, int week) throws Exception {
        List<String> list = new ArrayList<String>();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.roll(Calendar.WEEK_OF_YEAR, week);
        if (week == 0) {
            int day = calendar.get(Calendar.DAY_OF_WEEK);
            //是否工作日，是工作日的放入list集合放好
            while (!(day == Calendar.SUNDAY || day == Calendar.SATURDAY)) {
                list.add(sdf.format(calendar.getTime()));
                calendar.roll(Calendar.DAY_OF_YEAR, 1);
                day = calendar.get(Calendar.DAY_OF_WEEK);
            }
        } else {
            //获取下周一时间
            calendar.roll(Calendar.WEEK_OF_YEAR, -1);
            int weeks = calendar.get(Calendar.DAY_OF_WEEK);
            if (weeks > 2) {
                calendar.add(Calendar.DAY_OF_MONTH, -(weeks - 2) + 7);
            } else {
                calendar.add(Calendar.DAY_OF_MONTH, 2 - weeks + 7);
            }
            //获取下周一至五工作日
            list = getWorkDay(calendar.getTime(), 0);
        }
        return list;
    }
}
